38 THE WORLD OF THE SEA. 
which compensates for the magnificence of the terrestrial foliage. 
Some of these submarine plants are scarcely covered with water, 
whereas others hide themselves in the profundity of the ocean 
depths. In the neighbourhood of the Canary Islands, Humboldt 
and Bonpland drew up from a depth of 200 feet a Cawlerpa which 
had leaves like the vine; it possessed a beautiful green colour. 
Between the Isle of France and Madagascar, Bory de Saint- 
Vincent gathered a bunch of ribboned wrack (Sargassum turbina- 
tum), from a depth of 650 feet. The Callithamnions are very 
LAMINARIA., 
remarkable amongst the marine plants for the marvellous delicacy 
of their structure, the elegance of their branches, and the beauty of 
their scarlet or violet tints. 
The Laminaria stretch themselves out like immense, long 
straps, often fringed and pleated, which float gracefully upon the 
currents, and bend to the winds and the tempests. 
The Agara spread abroad their waving tongues, or large fans, 
shrivelled and jagged. 
The A/aria shoot out into the water from their slender yet stiff 
stems, which are surrounded at their top by a beautiful collar of 
short and sinuous ribbons, from the centre of which rises a thong- 
